Chemical Engineering MCQs

Page No. 314

Traces of tar fog present in the coke oven gas is removed by_________________?


aCyclone separator


bWet packed scrubber


cElectrostatic precipitator


dWashing with monoethanolamine



C/H ratio is the maximum in case of_________________?


aCoal


bFurnace oil


cNatural gas


dNaphtha


View Answer Coal

The bright glow of a combustion process is the characteristic of ______________ temperature oxidation of coal?


aFast & high


bSlow & low


cSlow & high


dFast & slow


View Answer Fast & high

Largest constituent of blast furnace gas is__________________?


aN2


bCO


cCO2


dH2


View Answer N2

A travelling grate stoker is meant for the efficient burning of ______________ coal?


aCaking


bPulverised


cNon-caking


dHigh ash


View Answer Non-caking

Lurgi coal gasifier is a pressurised ______________ bed reactor?


aMoving


bFixed


cFluidised


dEntrained


View Answer Moving

The fuel ratio of a coal is__________________?


aThe ratio of its percentage of fixed carbon to that of volatile matter


bHelpful in estimation of its rank


cBoth A. and B.


dNeither A. nor B.


View Answer Both A. and B.

Presence of free moisture in coal is most disadvantageous during_________________?


aIts pulverisation (as it requires more power)


bCombustion of fire slacks on the grates


cHandling (e.g. when emptying wagons)


dNone of these



Fuel for a nuclear reactor (thermal) is ____________________?


aUranium


bPlutonium


cRadium


dNone of these


View Answer Uranium

The calorific value of ‘LPG’ (50% propane + 50% butane) is about ______________ kcal/Nm3?


a5000


b25,000


c10,000


d15,000


View Answer 25,000

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